Door-stop.



W. SMITH.

DOOR STOP.

APPLICATION FILED AUG. e, 1913.

Patented Dec. 16, 1913 FFICE DOOR-STOP.

Application filed August 6, 1913.

To all whom t may concern Be it known that I, 1WALTER SMrrH, a citizenof the United States, and a resident of the city of Chicago, county ofCook, and State of Illinois, have invented cert-ain new and usefulImprovements in Door- Stops, of which the following is a specification.

My invention relates to improvements in door stops and has for itsobject the provision of an improved construction of this character whichis simple and efficient in operation.

The invent-ion consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawing forming a part of this specification, and in which- Figure 1 isa perspective view illustrating a. door stop embodying my invention,shown in one position of use, Fig. 2, an enlarged vertical section ofthe door stop, Fig. 3, a section taken on line @#51: of Fig. 2, and Fig.4, a section taken on line y-y of Fig. 2.

The preferred form of construction as illustrated in the drawingcomprises a casing 1 adapted to be attached to the lower portion of adoor 2 by means of screws 3 as shown. An eccentric locking dog 4 isarranged within casing 1 in position to project from the bottom thereofto cont-act with the floor or to be swung upwardly out of Contact withthe floor as indicated, s'aid casing 1 being slotted at 4 to permit ofsuch upward swinging. Dog 4 is provided with trunnions -5 and 5 whichfit within horizontal slots 6 extending from the inner edge of casing 1and rounded at their ends to constitute bearings for trunnions and 5.Each of the slots 6 is closed by means of vslidable plates 7 which areprovided with guide flanges 8 engaging the sides of casing 1 adjacentslots 6 as will be readily understood, said plates being inserted beforesaid casing is secured in position on the door.

'Irunnion 5 carries a pinion 9 xed thereto and meshing with a verticallyreciprocatory rack bar 10 carried by the lower end of a stem 11projecting from the top of casing 1 and provided with a foot piece orpedal 12 as shown. A. compression spring 13 is imprisoned between abearing 14 and a stop 15 on stem 11 thus serving to hold said stem andrack bar normally in elevated positions, said rack bar being soconnected with pin- Speccation of Letters Patent.

Patented Dec. 16, 1913.

Serial No. 783,274.

ion 9 that spring 13 tends to press dog 4 normally in contact with thefloor. The keeper 16 is fixed to a shaft 17 arranged in casing 1 and isso positioned that said keeper may be cau-sed -to contact with theperiphery of dog 4 and hold the same in inoperative position asindicated by dotted lines in Fig. 2, said shaft 17 being provided withan operating handle 18 for manipulating said keeper.

In use the casing 1 is secured to the lower portion of a door inposition to permit operative contact between the dog 4 and the floor. Asillustrated in the drawing, the construction is arranged to preventclosing of a door and for this purpose is secured to the outer side ofthe door with the dog 4 arranged as shown. Thus when the door is swungopen dog 4 contacting with the floor will have its lower portion swungto the right as shown in Fig. 2 and thus ride easily over the floor topermit opening of the door. However, reverse motion of the door causesthe eccentric portion of dog 4 to engage with the Hoor and thusautomatically lock the door against closing. When it is desired torender the dog inoperative, the pedal 12 is depressed and keeper 16shifted into contact with said dog to lock the same against operation.By the arrangement shown it will be observed that if keeper 16 is simplypermitted to hang substantially in the dotted line position illustratedin Fig. 2, the engagement with dog 4 will be automatic thus dispensingwith any manipulation of the keeper in locking the dog` in inoperativeposition. When it is desired to employ the stop as a means for lockingthe door in closed position, it is simply placed upon the other side ofthe door when it will accomplish the purpose as will be readilyunderstood.

IVhile I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having described my invention what I claim as new and desire to secureby Letters Pat-ent is:

1. rIhe combination with a doorJ of an eccentric locking dog pivotallymounted on said door in position to Contact with the Hoor; a pinionoperatively connected with said dog; a vertically reciprocatory rack barmeshing with said pinion and arranged to throw said dog into inoperativeposition upon depression thereof; and a spring normally tending toreturn said dog to operative position, substantially as described.

2. A door stop comprising a casing adapt-v ed to be secured to a door;an eccentric locking dog pivoted in said casing and arranged to projectfrom the lower end thereof to contact with a floor; a pinion operativelyconnected with said dog; a vertically reciprocatory rack'bar in saidcasing meshin with said pinion and arranged to throw sai dog intoinoperative position upon depression thereof; a compression springarranged to l,hold said rack bar normally in elevated position; and akeeper arranged to hold said dog in inoperative position, substantiallyas described.

In testimony whereof I have signed my name to this specification .in thepresence of two subscribing witnesses.

VALTER SMITH.

Vitnesses:

JOSHUA R. H. Por'rs, HELEN F. LILLIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

l Washington, D. C. Y

